linux-ext4 - Re: [PATCH RESEND v2 05/12] e2fsck: add new problem for casefolded name check

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87eejx2y85.fsf@collabora.com>
Date:   Thu, 10 Dec 2020 17:38:18 -0300
From:   Gabriel Krisman Bertazi <krisman@...labora.com>
To:     Arnaud Ferraris <arnaud.ferraris@...labora.com>
Cc:     linux-ext4@...r.kernel.org, drosen@...gle.com, ebiggers@...nel.org,
        tytso@....edu
Subject: Re: [PATCH RESEND v2 05/12] e2fsck: add new problem for casefolded
 name check

Arnaud Ferraris <arnaud.ferraris@...labora.com> writes:

> ---
> Changes in v2:
>   - added in this version
>
>  e2fsck/problem.c | 5 +++++
>  e2fsck/problem.h | 3 +++
>  2 files changed, 8 insertions(+)
>
> diff --git a/e2fsck/problem.c b/e2fsck/problem.c
> index e79c853b..2b596303 100644
> --- a/e2fsck/problem.c
> +++ b/e2fsck/problem.c
> @@ -1805,6 +1805,11 @@ static struct e2fsck_problem problem_table[] = {
>  	  N_("Encrypted @E references @i %Di, which has a different encryption policy.\n"),
>  	  PROMPT_CLEAR, 0, 0, 0, 0 },
>  
> +	/* Casefolded directory entry has illegal characters in its name */
> +	{ PR_2_BAD_CASEFOLDED_NAME,
> +	  N_("@E has illegal UTF-8 characters in its name.\n"),
> +	  PROMPT_FIX, 0, 0, 0, 0 },
> +
>  	/* Pass 3 errors */
>  
>  	/* Pass 3: Checking directory connectivity */
> diff --git a/e2fsck/problem.h b/e2fsck/problem.h
> index 4185e517..a8806fd4 100644
> --- a/e2fsck/problem.h
> +++ b/e2fsck/problem.h
> @@ -1028,6 +1028,9 @@ struct problem_context {
>  /* Encrypted directory contains file with different encryption policy */
>  #define PR_2_INCONSISTENT_ENCRYPTION_POLICY	0x020052
>  
> +/* Casefolded directory entry has illegal characters in its name */
> +#define PR_2_BAD_CASEFOLDED_NAME		0x0200053

Also, PR_2_BAD_ENCODED_NAME makes more sense than CASEFOLDED.  The
name is encoded in utf-8 but not casefolded on-disk.

> +
>  /*
>   * Pass 3 errors
>   */

-- 
Gabriel Krisman Bertazi